2.5 EXact2 main board
2.5.1 Terminal board on EXact2 main board
The layout drawing below gives an overview of components (st accessory) that can be connected to
the terminal blocks.
Component
Terminal board
connection
Description
BUS
1 - 4
Bus for external parts
BUS
5 - 8
Bus for external parts
TE... + MVM
9 - 19
Taken together, these terminals constitute IHCW, which can be used for
controlling the HCW coil. See also the HCW instructions.
Fire
20 - 21
BT40, BT50, BT70
Smoke detector or other fire detection switch
AUX IN
22 - 23
Same function as Fire
EXT start
24 - 25
If this is connected, the device can be started
If this is interrupted, the unit will stop
LSA
26 - 28
LS, exhaust air closing damper
LSAR, exhaust air closing damper with spring return
LSF
29 - 31
LS, outdoor air closing damper
LSFR, outdoor air closing damper with spring return
Alarm
32 - 34
General alarm
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Installation of the VEX
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Summary of Contents for VEX320C
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